Supply kubeconfig in examples and simplify CLI

[childsb]

It would be nice to trim down the CLI args of the standalone / out of kube flavor.

Some ideas-

• if master URL is specified, assume out of cluster
• in the container always read kubeconfig from /kubeconfig (or similar). then in the deployment/build show examples populating /kubeconfig as a docker volume with -v.. like docker run .... -v ~/.kube:/kubeconfig. also include example kubeconfig w/localhost in deploy/kube/config docker run .... -v ./deploy/kube/config:kube:/kubeconfig . then if /kubeconfig/config exists you can infer that its running out of cluster.

[wongma7]

OK, I got rid of the out-of-cluster flag, and added docker -v flag to the example, master and kubeconfig flags still work the same though.